linux-kernel - [RFC PATCH 5/6] media: Propagate sink -> source format in YUV passthough

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Message-ID: <20251209123136.273938-6-isaac.scott@ideasonboard.com>
Date: Tue,  9 Dec 2025 12:31:35 +0000
From: Isaac Scott <isaac.scott@...asonboard.com>
To: dafna@...tmail.com
Cc: laurent.pinchart@...asonboard.com,
	mchehab@...nel.org,
	heiko@...ech.de,
	linux-media@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Isaac Scott <isaac.scott@...asonboard.com>
Subject: [RFC PATCH 5/6] media: Propagate sink -> source format in YUV passthough

If we are in bypass mode, we should propagate the sink format of the ISP
to the source format to ensure the pipeline is valid.

Signed-off-by: Isaac Scott <isaac.scott@...asonboard.com>
---
 drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
index 716bd7f3c66d..c457593526c5 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
@@ -630,6 +630,11 @@ static void rkisp1_isp_set_src_fmt(struct rkisp1_isp *isp,
 	 */
 	sink_info = rkisp1_mbus_info_get_by_code(sink_fmt->code);
 
+	if (sink_info->pixel_enc == V4L2_PIXEL_ENC_YUV) {
+		format->code = sink_fmt->code;
+		dev_dbg(isp->rkisp1->dev, "ISP sink pad is YUV");
+	}
+
 	src_fmt->code = format->code;
 	src_info = rkisp1_mbus_info_get_by_code(src_fmt->code);
 	if (!src_info || !(src_info->direction & RKISP1_ISP_SD_SRC)) {
-- 
2.43.0